Tomboy isn't a credible alternative to Evernote because it doesn't offer tagging. Tagging was considered by Tomboy developers a few years ago, and then rejected in favour of notebooks. With tags, Tomboy would be my favourite app. Without tags, it's difficult to organise notes. Notebooks are not nearly as useful as tags.

Recently got Tomboy when I installed Ubuntu on an old laptop. Really impressed as a quick syncing notation system. Works cross platform, and best of all FREE! Just missing a smartphone app, and it'd be perfect.

Tomboy was one of the most missed applications when I moved from Linux to Mac. It's good to see that it is now available to both Mac and Windows!